Hmmmm it's hard to say then, but please call the hospital so you and your precious baby can get taken care of if anything is wrong! It could just be a ruptured capillary from all the pressure or a uti but just in case!
I have no idea... I noticed it when wipeing.
If you have had sexual intercourse it could be that ...they say the tissue inside could be irritated if your in no pain their isnt much to worry about get a lot of bed rest and see your doctor as soon as possible ..that happened to me around 20 weeks
Did it come out of your urethra or vagina? I know it can be hard to tell but the doctor will want to know. You should absolutely call the hospital and speak with an advice nurse. They will ask you a few questions and you may have to go in but bleeding should absolutely not be ignored especially at this point in your pregnancy.